Synthesis, bioactivity evaluation and theoretical study of nicotinamide derivatives containing diphenyl ether fragments as potential succinate dehydrogenase inhibitors
作者:Zhongzhong Yan、Bolin Yu、Xinyue Lan、Xinyu Cui、Di Zhao、Longjian Qiu、Haowei Wang、Wenchao Wang、Lixiangrui Chen、Lida Jin、Kangming Li
DOI:10.1016/j.molstruc.2024.138331
日期:2024.7
toxicity that targeted succinate dehydrogenase, as confirmed by the tests of cytotoxicity, inhibition of enzyme activity, mitochondrial membrane potential, and mycelial respiration. This study highlighted the potential of nicotinamide derivatives containing diphenyl ether fragments designed based on theoretical calculations as succinate dehydrogenase inhibitor (SDHI) fungicides.
为了获得对立枯丝核菌具有较高抑制活性的烟酰胺类杀菌剂,通过将二苯醚片段引入啶酰菌胺的结构中,设计合成了 24 种烟酰胺衍生物。生物测定表明,获得的化合物表现出不同程度的抗真菌活性。其中,化合物 2-氯-N-(2-(2-4-二氯苯氧基)苯基)烟酰胺 (7g) 对立枯菌表现出显著的生物活性 (EC50 = 0.034 mg/L),超过啶酰菌胺的抑制作用。实验上,化合物 7g 是一种很有前途的低毒性杀菌剂,靶向琥珀酸脱氢酶,细胞毒性、酶活性抑制、线粒体膜电位和菌丝呼吸试验证实了这一点。本研究强调了含有二苯醚片段的烟酰胺衍生物的潜力,这些衍生物基于理论计算设计为琥珀酸脱氢酶抑制剂 (SDHI) 杀菌剂。